Gas-burner.



Patented Aug. 7, |900. J. E. TATHAM.

G A S B U R N E B (Application filed Dec. 19, 1899.)

(No Model.)

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UNiTnD Smyrne- PATENT OFFICE.

JAMES ERNEST TATHAM, OF LONDON, ENGLAND, ASSIGNOR TO THE INTEN- SIFIED GAS LIGHT COMPANY, LIMITED, OF SAME PLACE.

GAS-BURNER.

SPECIFICATION forming part of 'Letters Patent No. 655,527, dated August 7, v1900.

Application led December 19, 1899. Serial No` 740,911. (No model.)

To @ZZ whom t may concern.-

Be it known that I, JAMES ERNEST TATHAM, gas engineer, a subject of the Queen of Great Britain and Ireland, and a resident of l2 Faviholme road, Kensington, London, England,

have invented certainnew and useful Improvements in or Connected with Gas-Burners, (for which an application has been made for a British patent, No. 14,023, dated July ro 7, 1899,) which invention is fully set forthin the following specification.

This invention relates to gas-burners used in what is known as incandescent gas-lighting-that is to say, burners in which the gas passing to the place of ignition-draws in air with it, the mixture of gas and air burning and rendering incandescent a hood or mantle. In lsuch burners as hitherto made I have found that if the pressure be less than 2o one inch owing to the power of the gas to draw in air not being utilized eihciently the said burners do not operate efticiently, the incomplete mixture ofV the air and gas rendering the combustion of the mixture imperz 5 fect.

It is the object of my invention to overcome this objection and to provide means whereby with a minimum consumption of gas and with gas at a pressure varying from half an inch 3o to an inch a flame of such a temperature is.

produced as to give a greatly-improved lighting eect relatively to the amount of gas consumed. I have found by numerous experiments and careful trials that in order to eect this it is necessary to provide a particular upward angling of the air-inlets surrounding a gas-inlet nozzle whose exterior is made of the same upward angle as that of the air-inlets and to make the opening from the said 4o nozzle in a plane at a certain regulated distance above the plane in which the upper sides of the air-inlets are located, all as hereinafter explained.

I will describe the invention with reference to the accompanying drawings.

Figure l is an elevation, Fig. 2 a vertical section, and Fig. 3 a transverse section, on the line l 2, Fig. 4, of so much of a burner as is necessary to illustrate my invention.

5o Fig. 4 is a view like Fig. l, but with a chimney, Fig. l showing the burner for use with out a chimney.

a is the gasinlet, terminating in a nozzle d2, situated in a mixing-chamber b, into which open the air-ports b2, in which chamber the gas and air become mixed and pass upward through the conical pipe c and straight pipe d to the gauze e at top, at which the mixture of gas and air is ignited and burns to render incandescent the hood or mantle f, which is 6o supported in any usual or suitable way-for example, by a forked rod f2, projecting axially through the gauze e, as shown, or by a rod secured to the exterior of the burner and projecting in the form of a hook above the center of the gauze e. The air-ports b2 are made in such a manner as to have an upward direction, as shown clearly in Fig. 2, the angle of the said air-'ports b2 being the same, or about the same, as the angle of the exterior 7o of the gas-nozzle a2. In practice I have found that an angle for the said air-ports b2 of or about thirty degrees to the axis of the burner gives the best results and that the vertical distance of the opening of the nozzle a2 above 75 the upper side of the air-ports b2 should be one-quarter of an inch or thereabout. The tube CZ is shown as being arranged on the conical tube c, so that it can be raised and lowered on the said tube c and be fixed in 8o position by a set-screw d2. The height of the nozzle a2 can also be regulated by screwing it out from or into the mixing-chamber b and iixing it in position by a set-screw. At g I' have shown hitand-miss airopenings, which can be regulated by rotating the upper part of the said chamber upon the lower part. g2 is a set-screw for fixing the parts in their adjusted position, the said screw screwing through a hole in the outer part and engag- 9o ing with a groove g3 in the inner part, so holding the parts in place upon each other.

I may omit the air-openings g; but it is generally convenient to provide them, as they can be completely closed when the gas is of ordinary quality, and they will be useful to supply additional air in the event of the burners being used with a supply of gas above normal richness. A

Having now particularly described and asroo certained the nature of this invention and in what manner the same is to be performed, I declare that what I claim is- A gas-burner consisting of the combination .of a mixing-chamber into Which projects a' nozzle from the gas-inlet and into which open upwardlydirected unobstructed air inlets surrounding the said nozzle and from which mixing-chamber project upward first a conical and then a straight pipe surrnounted by a mantle the said air-inlets beingz,r made at an angle substantially the saine as that of the exterior of the said nozzle the said angle being thirty degrees or thereabout to the axis of the burner and the opening of the said nozzle being one-quarter of an inch or thereabout above the upper side of the air-inlets all substantially as hereinbefore described.

In testimony whereof I have signed this specification in the presence of two subscribing Witnesses.

JAMES ERNEST r["A'IHAM.

Witnesses: l

JOHN EDWARD NEWTON, HENRY DENIS HosKINs. 

